You could buy one of the kits out there, you'll have to search for that one I don't know where they are Garrett, Hahn, etc etc. Or you could piece together one yourself for about 2/3s the price of a kit.
The best advice I can give is to don't do it on the cheap. You buy cheap parts and it cost you in the long run.
also there are a few tuners such as HP TUners is one of them and Trifecta Tuning is another
Mod's So Far: AEM CAI, C.A. Header, 2.50 Magnaflow Catback Exhaust , ZZP Catless Downpipe, DC Carbon Strut Bar, Dropped on Progress Springs. Tinted, Fully Debadged, Custom front SS bumper,2 Audiobahn 10" w/JL amp, Lower Billett Grille, Sengen 18 x 8 rims wrapped in Capitol Sport UHP 225/40/18.